public void Handle(ValidationResultCollection validationResults, params object[] p)
{
Page page = HttpContext.Current.Handler as Page;
if (page == null) return;
var control = ControlHelper.Find(page, "ExceptionControl") as UserControl;
if (control != null) control.Visible = true;
Label l = ControlHelper.Find(page, "lblException") as Label;
if (l != null) l.Text = validationResults.ToArray().ConvertToString("<br>");
}